Electrochemical Detection of Dopamine and Riboflavine on a Screen-Printed Carbon Electrode Modified by AuNPs Derived from Rhanterium suaveolens Plant Extract.
ACS Omega
; 6(37): 23666-23675, 2021 Sep 21.
Article
em En
| MEDLINE
| ID: mdl-34568646
ABSTRACT
A AuNP-modified screen-printed carbon electrode (AuNP/SPCE) for monitoring important biomolecules, such as dopamine (DA) and riboflavin (RF), having a high potential for personalized medicine and for continuous monitoring of human health is here proposed. AuNPs were synthesized using the extract of Rhanterium suaveolens as a reducing medium and were characterized by UV-vis spectroscopy, dynamic light scattering (DLS), and scanning and transmission electron microscopy (SEM and TEM). The synthesized AuNPs appear spherical and present a bimodal size distribution with a maximum centered at around 30-50 nm. Cyclic voltammetry (CV) experiments demonstrated that the modified AuNP/SPCE sensor exhibits superior electrochemical performances to the bare SPCE. Low limits of detection (LODs) of 0.2 and 0.07⯵M at S/N = 3 and sensitivities of 550.4⯠and 2399 µA mM-1 cm-2 were registered for DA and RF detection, respectively. Results demonstrate the promising electrochemical characteristics of the synthesized AuNPs and developed AuNP/SPCE electrochemical sensor for the determination of these important biomolecules.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
ACS Omega
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Tunísia